Share '2 Part Discussion:Mobile Carts/Contracts'

I just received 30 Nooks that are designated for Senior English to be used in school only. I need some kind of mobile cart to charge, store, move and keep them secure. Does anyone know of any?   I also got 20 for check out. I plan to use them in my new book Club program for student check out. Does anyone have a contract that they already have put into place that works nicely? I want an agreement…